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Living with Hereditary thrombocytopenia and hematologic cancer predisposition syndrome

An inherited condition with a low platelet count and a higher chance of some blood cancers.

Understanding Hereditary thrombocytopenia and hematologic cancer predisposition syndrome

Hereditary thrombocytopenia and hematologic cancer predisposition syndrome is an inherited condition with a low platelet count and a higher risk of blood cancers.

Thrombocytopenia (a low count of platelets, the cells that help blood clot) varies in severity. GARD says it may be caused by inherited changes in the RUNX1, ETV6, or ANKRD26 genes.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. Based on the summary, the main feature is:

  • Low platelet count (thrombocytopenia)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include blood and bone marrow specialists, cancer specialists and genetic specialists.

  3. Consider genetic testing

    Changes in RUNX1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    The RUNX1 Research Program may keep lists of experts for this condition.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Cancer specialists (oncologists); Genetic specialists (geneticists)
Expert care
Expert lists: The RUNX1 Research Program
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with The RUNX1 Research Program
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which gene change do I have: RUNX1, ETV6, or ANKRD26?
How often should blood counts and bone marrow be checked?
Should my relatives, including possible donors, be tested?

Quick facts

InheritanceAutosomal Dominant
GenesRUNX1

It may be caused by inherited changes in the RUNX1, ETV6, or ANKRD26 genes. It is autosomal dominant, so one changed copy of the gene is enough.

GeneticBlood

Also known as: familial platelet disorder with associated myeloid malignancy; familial platelet disorder with predisposition to acute myelogenous leukemia; familial platelet disorder with predisposition to myeloid malignancy; familial platelet disorder with propensity to acute myeloid leukemia; familial thrombocytopenia with propensity to acute myelogenous leukemia; fpd/aml

Patient organizations

Source: NIH GARD · Hereditary thrombocytopenia and hematologic cancer predisposition syndromeGARD ID 10352 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Hereditary thrombocytopenia and hematologic cancer predisposition syndrome.

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